@charset "utf-8";

body {
   font-family: Verdana, Geneva, sans-serif;
   color: rgb(220, 220, 220);
   background-color: rgba(20, 20, 30, 0.95);
   margin: 0;
   width: 90%;
   margin-left: auto;
   margin-right: auto;
}

header {
   text-align: center;
   padding: 20px;
}

header h1 {
   color: white;
   text-shadow: 0px 0px 10px cyan;
}

h2 {
   font-size: 1.3em;
   text-shadow: 4px 6px 5px gray;
}

nav ul {
   list-style: none;
   margin: 0;
   padding: 0;
}

nav a {
   display: block;
   background-color: rgb(40, 40, 60);
   line-height: 2.8em;
   text-decoration: none;
   text-align: center;
   color: white;
}

nav a:hover {
   background-color: rgb(0, 150, 255);
   color: black;
}

nav::after {
   content: "";
   display: table;
   clear: both;
}

main {
   padding: 20px;
   margin-top: 35px;
}

header img {
   width: 100%;
   padding: 0;
}

body > footer {
   clear: right;
   background-color: rgb(70, 90, 120);
   color: rgba(255,255,255,0.6);
   font-weight: bold;
   font-size: 0.9em;
   line-height: 3em;
   text-align: center;
   margin-top: 10px;
   padding: 10px;
}

ul {
   list-style-type: square;
}

.gallery {
   display: flex;
   flex-wrap: wrap;
   justify-content: center;
   gap: 10px;
}

.gallery img {
   width: 23%;
   border: 2px solid white;
}

.familyTable {
   width: 100%;
   border-collapse: collapse;
   background-color: rgb(40, 40, 60);
   border: 3px solid white;
}

.familyTable th,
.familyTable td {
   border: 1px solid gray;
   padding: 10px;
   text-align: left;
}

.familyTable thead {
   background-color: rgb(0, 150, 255);
   color: black;
}

.familyTable tfoot {
   background-color: rgb(70, 90, 120);
   font-weight: bold;
   text-align: center;
}

/* Mobile styles */
@media only screen and (max-width: 768px) {
   body {
      width: 100%;
      margin: 0;
   }

   nav li {
      float: none;
      font-size: x-large;
      width: 100%;
   }

   nav a {
      border-bottom: 1px solid black;
   }

   main > img {
      width: 90%;
      float: none;
   }

   .gallery img {
      width: 100%;
   }

   .familyTable,
   .familyTable thead,
   .familyTable tbody,
   .familyTable tfoot,
   .familyTable tr,
   .familyTable th,
   .familyTable td {
      display: block;
      width: 100%;
   }

   .familyTable thead {
      display: none;
   }

   .familyTable td {
      border-bottom: 1px solid gray;
   }

   .familyTable td::before {
      content: attr(data-label);
      display: block;
      font-weight: bold;
      color: white;
   }
}

/* Desktop styles */
@media only screen and (min-width: 769px) {
   html {
      background-image: url("background.jpg");
      background-repeat: no-repeat;
      background-size: cover;
      background-position: center;
      background-attachment: fixed;
   }

   nav li {
      display: block;
      width: 20%;
      float: left;
   }

   main > img {
      width: 25%;
      padding: 25px;
      float: right;
   }

   .gallery img {
      width: 48%;
   }
}

/* Large desktop styles */
@media only screen and (min-width: 1024px) {
   .gallery img {
      width: 23%;
   }
}